Portsmouth Rhode Island Weather Almanac  
Wednesday, August 25, 2021  
Clear, Light Winds, Continued Hot and Humid  
  Climate Normal Period Climate Record Period
  1991 - 2020 1893 - 2021
    August 25, 2021   Record   Record  
Observed Daily Data   2021   2020   Norm   Depart   Highest   Lowest  
Maximum Temperature   88   91   78   +10   91   in 2020   63   in 1945  
Minimum Temperature   69   71   63   +6   71   in 2020   49   in 1940  
Average Temperature   79   81   70   +9   81   in 2020   59   in 1945  
 Month Avg Max Temperature   81.2   83.7   78.8   +2.4   83.7   in 2020   73.1   in 1964  
Month Avg Min Temperature   66.9   67.5   64.1   +2.8   68.1   in 2018   56.8   in 1964  
Month Average Temperature   74.4   75.8   71.5   +2.9   75.9   in 1939   65.2   in 1964  
High Heat Index   99   97   78   +21   99   in 2021            
Low Wind Chill                             #N/A   in #N/A  
HDD   0   0   0   +0   6   in 1945   0   in    
Month HDD   0   0   0   +0   26   in 1964   0   in 2021  
Season HDD   9   0   3   +6   34   in 1914   0   in 2020  
CDD   14   16   6   +8   16   in 2020   0   in 2019  
Month CDD   234   271   175   +59   273   in 1939   32   in 1964  
Year CDD   624   735   503   +121   735   in 2020   219   in 1902  
Maximum Dew Point   77   75   67   +10   77   in 2021   48   in 1987  
Minimum Dew Point   68   60   58   +10   70   in 1998   40   in 1989  
Average  Dew Point   73   68   63   +10   73   in 2021   45   in 1963  
 Month Avg Max Dew Point   72.2   71.5   68.3   +3.9   72.2   in 2021   59.4   in 1964  
Month Avg Min Dew Point   64.2   63.4   60.1   +4.2   65.2   in 2018   49.1   in 1964  
Month Average Dew Point   68.2   67.4   64.2   +4.0   68.7   in 2018   54.2   in 1964  
Precipitation   .00   .00   .11   -.11   2.09   in 1958            
One Hour   .00   .00           .47   in 1958            
Hourly Rate   .00   .00           2.81   in 2015            
Month Precipitation   6.03   1.40   2.97   +3.06   11.04   in 1946   .27   in 1993  
Year Precipitation   28.86   23.78   28.62   +.24   43.94   in 1983   16.38   in 1957  
Snow   #N/A   #N/A   #N/A   #N/A   #N/A   in #N/A            
Snow Depth   #N/A   #N/A           #N/A   in              
Month Snow   #N/A   #N/A   #N/A   #N/A   #N/A   in #N/A   #N/A   in    
Season Snow   #N/A   #N/A   #N/A   #N/A   #N/A   in #N/A   #N/A   in #N/A  
    August 25, 2021     Record Record
Observed Daily Data   2021   2020   Norm   Depart   Highest Lowest
Maximum Humidity   98%   98%   92%   +6%   100%   in 2004   68%   in 1995  
Minimum Humidity   59%   45%   57%   +2%   90%   in 1958   32%   in 1987  
Average Humidity   79%   72%   75%   +4%   95%   in 1958   52%   in 1995  
Maximum Barometer   30.10   29.90   30.11   -00.01   30.65   in 1991   29.74   in 1982  
Minimum Barometer   30.00   29.64   29.92   +00.08   30.27   in 2004   29.52   in 1988  
Average Barometer   30.05   29.77   30.02   +00.03   30.44   in 1991   29.66   in 1982  
Average Wind   3.2   5.4   5.7   -2.5   13.4   in 1986   1.8   in 2006  
Direction   NW   NW   SSW       WNW         ESE        
High Wind Gust   14   25   20   -6   38   in 1958   10   in 1967  
Direction   SW   NNW   SSW       S         NE        
Maximum Water Temp   76.1   68.0   71.5   +4.6   76.6   in 2015   68.0   in 2020  
Minimum Water Temp   73.2   64.6   68.5   +4.7   73.7   in 2015   63.5   in 2003  
Average Water Temp   74.7   66.3   70.0   +4.7   75.2   in 2015   66.3   in 2020  
Sunrise/ AM Twilight   6:05:28 AM   5:36:41 AM            
Sunset / PM Twilight   7:28:36 PM   7:57:23 PM            
Length Of Day   13:23:08                          
Special Conditions   None                              
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Hour-by-Hour Weather For August 25, 2021            
Climate Weather for August 25            
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